yo CRETACEOUS AND TERTIARY FISH. 



coronal margin usually a little undulated. Cutting-edges all 

 finely serrated, margin below notch usually with slightly enlarged 

 serrse, graduated externally. No basal cusps. Root robust, thick, 

 outer surface depressed to slightly concave, and inner bulging 

 convexly and extending high. Lower margin of root emar- 

 ginate. Length 24 mm. 



This species does not appear to have ever been recorded from 

 New Jersey before. 



Formation and locality. A plentiful species in the Maryland 

 Miocene, and the following, except the last, are probably from 

 the upper Cretaceous: Monmouth County 2 (C. C. Abbott), 3 

 (W. Cleburne), 2 (P. D. Knieskern) and 1 without donor; Bur- 

 lington County 3 (T. A. Conrad) ; Vincentowri [Manasquan 

 marl, K.] 3 (T. M. Bryan) ; Allowaystown in Salem County 2 

 (H. C. Yarrow). 



Galeocerdo eatidens Agassiz. 



Teeth very broad, well compressed, low, and rather thin. 

 Coronal surfaces low, well compressed, smooth, moderately 

 broad, pointed, outer somewhat depressed or flattened and not 



Fig. 33. — Galeocerdo latidens Agassiz. Allowaystown (Yarrow). 



quite so convex as inner. Apex usually well deflected to one side, 

 and longer coronal margin usually rather evenly convex. Cut- 

 ting-edges finely serrated. Margin below notch with graduated 

 serrae, those at notch largest, generally several rather conspicu- 

 ous. No basal cusps. Root very broad in proportion, well com- 

 pressed, not very deep, outer surface a little concave and inner a 

 little convex. Length 18 mm. 



This species closely resembles Galeocerdo aduncus and may be 

 distinguished with difficulty. The only conspicuous character 



